Another of these factors is infertility. Generally, female gorillas mature at 10â12 years of age (or earlier at 7â8 years) and their male counterparts mature more slowly, rarely strong and dominant enough to reproduce before 15â20 years of age.
A herniated disk, sometimes (incorrectly) called a slipped disk, is a common cause of severe back pain and sciatica. A disk in the lumbar area becomes herniated when it ruptures or thins out, and degenerates to the point that the gel within the disk (the nucleus pulposus) pushes outward.
Sciatica is a symptom of leg pain, including weakness, tingling, and numbness. These sensations begin in your lower back and travel through your buttocks and down the large sciatic nerve in the back of your leg- which can have an effect on your knee, causing pain.